Annotation of GNUtools/cc/cp-edsel.c, revision 1.1

1.1     ! root        1: /* Interface to LUCID Cadillac system for GNU compiler.
        !             2:    Copyright (C) 1988, 1992, 1993 Free Software Foundation, Inc.
        !             3: 
        !             4: This file is part of GNU CC.
        !             5: 
        !             6: GNU CC is free software; you can redistribute it and/or modify
        !             7: it under the terms of the GNU General Public License as published by
        !             8: the Free Software Foundation; either version 2, or (at your option)
        !             9: any later version.
        !            10: 
        !            11: GNU CC is distributed in the hope that it will be useful,
        !            12: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            14: GNU General Public License for more details.
        !            15: 
        !            16: You should have received a copy of the GNU General Public License
        !            17: along with GNU CC; see the file COPYING.  If not, write to
        !            18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            19: 
        !            20: #include "config.h"
        !            21: 
        !            22: #include "tree.h"
        !            23: #include "flags.h"
        !            24: #include <stdio.h>
        !            25: #include "cp-tree.h"
        !            26: #include "obstack.h"
        !            27: 
        !            28: #ifdef CADILLAC
        !            29: #include <compilerreq.h>
        !            30: #include <compilerconn.h>
        !            31: #include <sys/time.h>
        !            32: #include <sys/types.h>
        !            33: #include <errno.h>
        !            34: #include <sys/file.h>
        !            35: 
        !            36: #define obstack_chunk_alloc xmalloc
        !            37: #define obstack_chunk_free free
        !            38: 
        !            39: void init_cadillac ();
        !            40: 
        !            41: extern char *input_filename;
        !            42: extern int lineno;
        !            43: 
        !            44: /* Put random information we might want to get back from
        !            45:    Cadillac here.  */
        !            46: typedef struct
        !            47: {
        !            48:   /* The connection to the Cadillac kernel.  */
        !            49:   Connection *conn;
        !            50: 
        !            51:   /* Input and output file descriptors for Cadillac.  */
        !            52:   short fd_input, fd_output;
        !            53: 
        !            54:   /* #include nesting of current file.  */
        !            55:   short depth;
        !            56: 
        !            57:   /* State variables for the connection.  */
        !            58:   char messages;
        !            59:   char conversion;
        !            60:   char emission;
        !            61:   char process_until;
        !            62: 
        !            63:   /* #if level of current file.  */
        !            64:   int iflevel;
        !            65: 
        !            66:   /* Line number that starts current source file.  */
        !            67:   int lineno;
        !            68: 
        !            69:   /* Name of current file.  */
        !            70:   char *filename;
        !            71: 
        !            72:   /* Where to stop processing (if process_until is set).  */
        !            73:   char *end_filename;
        !            74:   int end_position;
        !            75: 
        !            76: } cadillac_struct;
        !            77: static cadillac_struct cadillacObj;
        !            78: 
        !            79: /* Nonzero if in the process of exiting.  */
        !            80: static int exiting;
        !            81: 
        !            82: void cadillac_note_source ();
        !            83: static void CWriteLanguageDecl ();
        !            84: static void CWriteLanguageType ();
        !            85: static void CWriteTopLevel ();
        !            86: static void cadillac_note_filepos ();
        !            87: static void cadillac_process_request (), cadillac_process_requests ();
        !            88: static void cadillac_switch_source ();
        !            89: static void exit_cadillac ();
        !            90: 
        !            91: /* Blocking test.  */
        !            92: static int
        !            93: readable_p (fd)
        !            94:      int fd;
        !            95: {
        !            96:   fd_set f;
        !            97: 
        !            98:   FD_ZERO (&f);
        !            99:   FD_SET (fd, &f);
        !           100: 
        !           101:   return select (32, &f, NULL, NULL, 0) == 1;
        !           102: }
        !           103: 
        !           104: static CObjectType *tree_to_cadillac_map;
        !           105: struct obstack cadillac_obstack;
        !           106: 
        !           107: 
        !           108: #include "stack.h"
        !           109: 
        !           110: struct context_level
        !           111: {
        !           112:   struct stack_level base;
        !           113: 
        !           114:   tree context;
        !           115: };
        !           116: 
        !           117: /* Stack for maintaining contexts (in case functions or types are nested).
        !           118:    When defining a struct type, the `context' field is the RECORD_TYPE.
        !           119:    When defining a function, the `context' field is the FUNCTION_DECL.  */
        !           120: 
        !           121: static struct context_level *context_stack;
        !           122: 
        !           123: static struct context_level *
        !           124: push_context_level (stack, obstack)
        !           125:      struct stack_level *stack;
        !           126:      struct obstack *obstack;
        !           127: {
        !           128:   struct context_level tem;
        !           129: 
        !           130:   tem.base.prev = stack;
        !           131:   return (struct context_level *)push_stack_level (obstack, &tem, sizeof (tem));
        !           132: }
        !           133: 
        !           134: /* Discard a level of search allocation.  */
        !           135: 
        !           136: static struct context_level *
        !           137: pop_context_level (stack)
        !           138:      struct context_level *stack;
        !           139: {
        !           140:   stack = (struct context_level *)pop_stack_level (stack);
        !           141:   return stack;
        !           142: }
        !           143: 
        !           144: void
        !           145: init_cadillac ()
        !           146: {
        !           147:   extern FILE *finput;
        !           148:   extern int errno;
        !           149:   CCompilerMessage* req;
        !           150:   cadillac_struct *cp = &cadillacObj;
        !           151:   int i;
        !           152: 
        !           153:   if (! flag_cadillac)
        !           154:     return;
        !           155: 
        !           156:   tree_to_cadillac_map = (CObjectType*) xmalloc (sizeof (CObjectType) * LAST_CPLUS_TREE_CODE);
        !           157:   for (i = 0; i < LAST_CPLUS_TREE_CODE; i++)
        !           158:     tree_to_cadillac_map[i] = MiscOType;
        !           159:   tree_to_cadillac_map[RECORD_TYPE] = StructOType;
        !           160:   tree_to_cadillac_map[UNION_TYPE] = UnionOType;
        !           161:   tree_to_cadillac_map[ENUMERAL_TYPE] = EnumTypeOType;
        !           162:   tree_to_cadillac_map[TYPE_DECL] = TypedefOType;
        !           163:   tree_to_cadillac_map[VAR_DECL] = VariableOType;
        !           164:   tree_to_cadillac_map[CONST_DECL] = EnumConstantOType;
        !           165:   tree_to_cadillac_map[FUNCTION_DECL] = FunctionOType;
        !           166:   tree_to_cadillac_map[FIELD_DECL] = FieldOType;
        !           167: 
        !           168: #ifdef sun
        !           169:   on_exit (&exit_cadillac, 0);
        !           170: #endif
        !           171: 
        !           172:   gcc_obstack_init (&cadillac_obstack);
        !           173: 
        !           174:   /* Yow!  This is the way Cadillac was designed to deal with
        !           175:      Oregon C++ compiler!  */
        !           176:   cp->fd_input = flag_cadillac;
        !           177:   cp->fd_output = flag_cadillac;
        !           178: 
        !           179:   /* Start in "turned-on" state.  */
        !           180:   cp->messages = 1;
        !           181:   cp->conversion = 1;
        !           182:   cp->emission = 1;
        !           183: 
        !           184:   /* Establish a connection with Cadillac here.  */
        !           185:   cp->conn = NewConnection (cp, cp->fd_input, cp->fd_output);
        !           186: 
        !           187:   CWriteHeader (cp->conn, WaitingMType, 0);
        !           188:   CWriteRequestBuffer (cp->conn);
        !           189: 
        !           190:   if (!readable_p (cp->fd_input))
        !           191:     ;
        !           192: 
        !           193:   req = CReadCompilerMessage (cp->conn);
        !           194: 
        !           195:   if (!req)
        !           196:     switch (errno)
        !           197:       {
        !           198:       case EWOULDBLOCK:
        !           199:        sleep (5);
        !           200:        return;
        !           201:       
        !           202:       case 0:
        !           203:        fatal ("init_cadillac: EOF on connection to kernel, exiting\n");
        !           204:        break;
        !           205: 
        !           206:       default:
        !           207:        perror ("Editor to kernel connection");
        !           208:        exit (0);
        !           209:       }
        !           210: }
        !           211: 
        !           212: static void
        !           213: cadillac_process_requests (conn)
        !           214:      Connection *conn;
        !           215: {
        !           216:   CCompilerMessage *req;
        !           217:   while (req = (CCompilerMessage*) CPeekNextRequest (conn))
        !           218:     {
        !           219:       req = CReadCompilerMessage (conn);
        !           220:       cadillac_process_request (&cadillacObj, req);
        !           221:     }
        !           222: }
        !           223: 
        !           224: static void
        !           225: cadillac_process_request (cp, req)
        !           226:      cadillac_struct *cp;
        !           227:      CCompilerMessage *req;
        !           228: {
        !           229:   if (! req)
        !           230:     return;
        !           231: 
        !           232:   switch (req->reqType)
        !           233:     {
        !           234:     case ProcessUntilMType:
        !           235:       if (cp->process_until)
        !           236:        my_friendly_abort (23);
        !           237:       cp->process_until = 1;
        !           238:       /* This is not really right.  */
        !           239:       cp->end_position = ((CCompilerCommand*)req)->processuntil.position;
        !           240: #if 0
        !           241:       cp->end_filename = req->processuntil.filename;
        !           242: #endif
        !           243:       break;
        !           244: 
        !           245:     case CommandMType:
        !           246:       switch (req->header.data)
        !           247:        {
        !           248:        case MessagesOnCType:
        !           249:          cp->messages = 1;
        !           250:          break;
        !           251:        case MessagesOffCType:
        !           252:          cp->messages = 0;
        !           253:          break;
        !           254:        case ConversionOnCType:
        !           255:          cp->conversion = 1;
        !           256:          break;
        !           257:        case ConversionOffCType:
        !           258:          cp->conversion = 0;
        !           259:          break;
        !           260:        case EmissionOnCType:
        !           261:          cp->emission = 1;
        !           262:          break;
        !           263:        case EmissionOffCType:
        !           264:          cp->emission = 0;
        !           265:          break;
        !           266: 
        !           267:        case FinishAnalysisCType:
        !           268:          return;
        !           269: 
        !           270:        case PuntAnalysisCType:
        !           271:        case ContinueAnalysisCType:
        !           272:        case GotoFileposCType:
        !           273:        case OpenSucceededCType:
        !           274:        case OpenFailedCType:
        !           275:          fprintf (stderr, "request type %d not implemented\n", req->reqType);
        !           276:          return;
        !           277: 
        !           278:        case DieCType:
        !           279:          if (! exiting)
        !           280:            my_friendly_abort (24);
        !           281:          return;
        !           282: 
        !           283:        }
        !           284:       break;
        !           285: 
        !           286:     default:
        !           287:       fatal ("unknown request type %d", req->reqType);
        !           288:     }
        !           289: }
        !           290: 
        !           291: void
        !           292: cadillac_start ()
        !           293: {
        !           294:   Connection *conn = cadillacObj.conn;
        !           295:   CCompilerMessage *req;
        !           296: 
        !           297:   /* Let Cadillac know that we start in C++ language scope.  */
        !           298:   CWriteHeader (conn, ForeignLinkageMType, LinkCPlus);
        !           299:   CWriteLength (conn);
        !           300:   CWriteRequestBuffer (conn);
        !           301: 
        !           302:   cadillac_process_requests (conn);
        !           303: }
        !           304: 
        !           305: static void
        !           306: cadillac_printf (msg, name)
        !           307: {
        !           308:   if (cadillacObj.messages)
        !           309:     printf ("[%s,%4d] %s `%s'\n", input_filename, lineno, msg, name);
        !           310: }
        !           311: 
        !           312: void
        !           313: cadillac_start_decl (decl)
        !           314:      tree decl;
        !           315: {
        !           316:   Connection *conn = cadillacObj.conn;
        !           317:   CObjectType object_type = tree_to_cadillac_map [TREE_CODE (decl)];
        !           318: 
        !           319:   if (context_stack)
        !           320:     switch (TREE_CODE (context_stack->context))
        !           321:       {
        !           322:       case FUNCTION_DECL:
        !           323:        /* Currently, cadillac only implements top-level forms.  */
        !           324:        return;
        !           325:       case RECORD_TYPE:
        !           326:       case UNION_TYPE:
        !           327:        cadillac_printf ("start class-level decl", IDENTIFIER_POINTER (DECL_NAME (decl)));
        !           328:        break;
        !           329:       default:
        !           330:        my_friendly_abort (25);
        !           331:       }
        !           332:   else
        !           333:     {
        !           334:       cadillac_printf ("start top-level decl", IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
        !           335:       CWriteTopLevel (conn, StartMType);
        !           336:     }
        !           337: 
        !           338:   CWriteLanguageDecl (conn, decl, tree_to_cadillac_map[TREE_CODE (decl)]);
        !           339:   CWriteRequestBuffer (conn);
        !           340:   cadillac_process_requests (conn);
        !           341: }
        !           342: 
        !           343: void
        !           344: cadillac_finish_decl (decl)
        !           345:      tree decl;
        !           346: {
        !           347:   Connection *conn = cadillacObj.conn;
        !           348: 
        !           349:   if (context_stack)
        !           350:     switch (TREE_CODE (context_stack->context))
        !           351:       {
        !           352:       case FUNCTION_DECL:
        !           353:        return;
        !           354:       case RECORD_TYPE:
        !           355:       case UNION_TYPE:
        !           356:        cadillac_printf ("end class-level decl", IDENTIFIER_POINTER (DECL_NAME (decl)));
        !           357:        CWriteHeader (conn, EndDefMType, 0);
        !           358:        CWriteLength (conn);
        !           359:        break;
        !           360:       default:
        !           361:        my_friendly_abort (26);
        !           362:       }
        !           363:   else
        !           364:     {
        !           365:       cadillac_printf ("end top-level decl", IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
        !           366:       CWriteHeader (conn, EndDefMType, 0);
        !           367:       CWriteLength (conn);
        !           368:       CWriteTopLevel (conn, StopMType);
        !           369:     }
        !           370: 
        !           371:   CWriteRequestBuffer (conn);
        !           372:   cadillac_process_requests (conn);
        !           373: }
        !           374: 
        !           375: void
        !           376: cadillac_start_function (fndecl)
        !           377:      tree fndecl;
        !           378: {
        !           379:   Connection *conn = cadillacObj.conn;
        !           380: 
        !           381:   if (context_stack)
        !           382:     /* nested functions not yet handled.  */
        !           383:     my_friendly_abort (27);
        !           384: 
        !           385:   cadillac_printf ("start top-level function", lang_printable_name (fndecl));
        !           386:   context_stack = push_context_level (context_stack, &cadillac_obstack);
        !           387:   context_stack->context = fndecl;
        !           388: 
        !           389:   CWriteTopLevel (conn, StartMType);
        !           390:   my_friendly_assert (TREE_CODE (fndecl) == FUNCTION_DECL, 202);
        !           391:   CWriteLanguageDecl (conn, fndecl,
        !           392:                      (TREE_CODE (TREE_TYPE (fndecl)) == METHOD_TYPE
        !           393:                       ? MemberFnOType : FunctionOType));
        !           394:   CWriteRequestBuffer (conn);
        !           395:   cadillac_process_requests (conn);
        !           396: }
        !           397: 
        !           398: void
        !           399: cadillac_finish_function (fndecl)
        !           400:      tree fndecl;
        !           401: {
        !           402:   Connection *conn = cadillacObj.conn;
        !           403: 
        !           404:   cadillac_printf ("end top-level function", lang_printable_name (fndecl));
        !           405:   context_stack = pop_context_level (context_stack);
        !           406: 
        !           407:   if (context_stack)
        !           408:     /* nested functions not yet implemented.  */
        !           409:     my_friendly_abort (28);
        !           410: 
        !           411:   CWriteHeader (conn, EndDefMType, 0);
        !           412:   CWriteLength (conn);
        !           413:   CWriteTopLevel (conn, StopMType);
        !           414:   CWriteRequestBuffer (conn);
        !           415:   cadillac_process_requests (conn);
        !           416: }
        !           417: 
        !           418: void
        !           419: cadillac_finish_anon_union (decl)
        !           420:      tree decl;
        !           421: {
        !           422:   Connection *conn = cadillacObj.conn;
        !           423: 
        !           424:   if (! global_bindings_p ())
        !           425:     return;
        !           426:   cadillac_printf ("finish top-level anon union", "");
        !           427:   CWriteHeader (conn, EndDefMType, 0);
        !           428:   CWriteLength (conn);
        !           429:   CWriteTopLevel (conn, StopMType);
        !           430:   CWriteRequestBuffer (conn);
        !           431:   cadillac_process_requests (conn);
        !           432: }
        !           433: 
        !           434: void
        !           435: cadillac_start_enum (type)
        !           436:      tree type;
        !           437: {
        !           438:   Connection *conn = cadillacObj.conn;
        !           439: 
        !           440:   tree name = TYPE_NAME (type);
        !           441: 
        !           442:   if (TREE_CODE (name) == TYPE_DECL)
        !           443:     name = DECL_NAME (name);
        !           444: 
        !           445:   if (context_stack)
        !           446:     switch (TREE_CODE (context_stack->context))
        !           447:       {
        !           448:       case FUNCTION_DECL:
        !           449:        return;
        !           450:       case RECORD_TYPE:
        !           451:       case UNION_TYPE:
        !           452:        break;
        !           453:       default:
        !           454:        my_friendly_abort (29);
        !           455:       }
        !           456:   else
        !           457:     {
        !           458:       cadillac_printf ("start top-level enum", IDENTIFIER_POINTER (name));
        !           459:       CWriteTopLevel (conn, StartMType);
        !           460:     }
        !           461: 
        !           462:   CWriteLanguageType (conn, type, tree_to_cadillac_map[ENUMERAL_TYPE]);
        !           463: }
        !           464: 
        !           465: void
        !           466: cadillac_finish_enum (type)
        !           467:      tree type;
        !           468: {
        !           469:   Connection *conn = cadillacObj.conn;
        !           470:   tree name = TYPE_NAME (type);
        !           471: 
        !           472:   if (TREE_CODE (name) == TYPE_DECL)
        !           473:     name = DECL_NAME (name);
        !           474: 
        !           475:   if (context_stack)
        !           476:     switch (TREE_CODE (context_stack->context))
        !           477:       {
        !           478:       case FUNCTION_DECL:
        !           479:        return;
        !           480:       case RECORD_TYPE:
        !           481:       case UNION_TYPE:
        !           482:        CWriteHeader (conn, EndDefMType, 0);
        !           483:        CWriteLength (conn);
        !           484:        break;
        !           485:       default:
        !           486:        my_friendly_abort (30);
        !           487:       }
        !           488:   else
        !           489:     {
        !           490:       CWriteHeader (conn, EndDefMType, 0);
        !           491:       CWriteLength (conn);
        !           492:       cadillac_printf ("finish top-level enum", IDENTIFIER_POINTER (name));
        !           493:       CWriteTopLevel (conn, StopMType);
        !           494:     }
        !           495: 
        !           496:   CWriteRequestBuffer (conn);
        !           497:   cadillac_process_requests (conn);
        !           498: }
        !           499: 
        !           500: void
        !           501: cadillac_start_struct (type)
        !           502:      tree type;
        !           503: {
        !           504:   Connection *conn = cadillacObj.conn;
        !           505:   tree name = TYPE_NAME (type);
        !           506: 
        !           507:   if (TREE_CODE (name) == TYPE_DECL)
        !           508:     name = DECL_NAME (name);
        !           509: 
        !           510:   if (context_stack)
        !           511:     switch (TREE_CODE (context_stack->context))
        !           512:       {
        !           513:       case FUNCTION_DECL:
        !           514:        return;
        !           515:       case RECORD_TYPE:
        !           516:       case UNION_TYPE:
        !           517:        return;
        !           518:       default:
        !           519:        my_friendly_abort (31);
        !           520:       }
        !           521:   else
        !           522:     {
        !           523:       cadillac_printf ("start struct", IDENTIFIER_POINTER (name));
        !           524:       CWriteTopLevel (conn, StartMType);
        !           525:     }
        !           526: 
        !           527:   context_stack = push_context_level (context_stack, &cadillac_obstack);
        !           528:   context_stack->context = type;
        !           529: 
        !           530:   CWriteLanguageType (conn, type,
        !           531:                      TYPE_LANG_SPECIFIC (type) && CLASSTYPE_DECLARED_CLASS (type) ? ClassOType : tree_to_cadillac_map[TREE_CODE (type)]);
        !           532: }
        !           533: 
        !           534: void
        !           535: cadillac_finish_struct (type)
        !           536:      tree type;
        !           537: {
        !           538:   Connection *conn = cadillacObj.conn;
        !           539:   tree name = TYPE_NAME (type);
        !           540: 
        !           541:   if (TREE_CODE (name) == TYPE_DECL)
        !           542:     name = DECL_NAME (name);
        !           543: 
        !           544:   context_stack = pop_context_level (context_stack);
        !           545:   if (context_stack)
        !           546:     return;
        !           547: 
        !           548:   cadillac_printf ("finish struct", IDENTIFIER_POINTER (name));
        !           549:   CWriteHeader (conn, EndDefMType, 0);
        !           550:   CWriteLength (conn);
        !           551:   CWriteTopLevel (conn, StopMType);
        !           552:   CWriteRequestBuffer (conn);
        !           553:   cadillac_process_requests (conn);
        !           554: }
        !           555: 
        !           556: void
        !           557: cadillac_finish_exception (type)
        !           558:      tree type;
        !           559: {
        !           560:   Connection *conn = cadillacObj.conn;
        !           561: 
        !           562:   fatal ("cadillac_finish_exception");
        !           563:   CWriteHeader (conn, EndDefMType, 0);
        !           564:   CWriteLength (conn);
        !           565:   CWriteTopLevel (conn, StopMType);
        !           566:   CWriteRequestBuffer (conn);
        !           567:   cadillac_process_requests (conn);
        !           568: }
        !           569: 
        !           570: void
        !           571: cadillac_push_class (type)
        !           572:      tree type;
        !           573: {
        !           574: }
        !           575: 
        !           576: void
        !           577: cadillac_pop_class ()
        !           578: {
        !           579: }
        !           580: 
        !           581: void
        !           582: cadillac_push_lang (name)
        !           583:      tree name;
        !           584: {
        !           585:   Connection *conn = cadillacObj.conn;
        !           586:   CLinkLanguageType m;
        !           587: 
        !           588:   if (name == lang_name_cplusplus)
        !           589:     m = LinkCPlus;
        !           590:   else if (name == lang_name_c)
        !           591:     m = LinkC;
        !           592:   else
        !           593:     my_friendly_abort (32);
        !           594:   CWriteHeader (conn, ForeignLinkageMType, m);
        !           595:   CWriteRequestBuffer (conn);
        !           596:   cadillac_process_requests (conn);
        !           597: }
        !           598: 
        !           599: void
        !           600: cadillac_pop_lang ()
        !           601: {
        !           602:   Connection *conn = cadillacObj.conn;
        !           603: 
        !           604:   CWriteHeader (conn, ForeignLinkageMType, LinkPop);
        !           605:   CWriteRequestBuffer (conn);
        !           606:   cadillac_process_requests (conn);
        !           607: }
        !           608: 
        !           609: void
        !           610: cadillac_finish_stmt ()
        !           611: {
        !           612: }
        !           613: 
        !           614: void
        !           615: cadillac_note_source ()
        !           616: {
        !           617:   cadillacObj.lineno = lineno;
        !           618:   cadillacObj.filename = input_filename;
        !           619: }
        !           620: 
        !           621: static void
        !           622: CWriteTopLevel (conn, m)
        !           623:      Connection *conn;
        !           624:      CMessageSubType m;
        !           625: {
        !           626:   static context_id = 0;
        !           627:   CWriteHeader (conn, TopLevelFormMType, m);
        !           628:   cadillac_note_filepos ();
        !           629: 
        !           630:   /* Eventually, this will point somewhere into the digest file.  */
        !           631:   context_id += 1;
        !           632:   CWriteSomething (conn, &context_id, sizeof (BITS32));
        !           633: 
        !           634:   CWriteSomething (conn, &cadillacObj.iflevel, sizeof (BITS32));
        !           635:   CWriteLength (conn);
        !           636: }
        !           637: 
        !           638: static void
        !           639: cadillac_note_filepos ()
        !           640: {
        !           641:   extern FILE *finput;
        !           642:   int pos = ftell (finput);
        !           643:   CWriteSomething (cadillacObj.conn, &pos, sizeof (BITS32));
        !           644: }
        !           645: 
        !           646: void
        !           647: cadillac_switch_source (startflag)
        !           648:      int startflag;
        !           649: {
        !           650:   Connection *conn = cadillacObj.conn;
        !           651:   /* Send out the name of the source file being compiled.  */
        !           652: 
        !           653:   CWriteHeader (conn, SourceFileMType, startflag ? StartMType : StopMType);
        !           654:   CWriteSomething (conn, &cadillacObj.depth, sizeof (BITS16));
        !           655:   CWriteVstring0 (conn, input_filename);
        !           656:   CWriteLength (conn);
        !           657:   CWriteRequestBuffer (conn);
        !           658:   cadillac_process_requests (conn);
        !           659: }
        !           660: 
        !           661: void
        !           662: cadillac_push_source ()
        !           663: {
        !           664:   cadillacObj.depth += 1;
        !           665:   cadillac_switch_source (1);
        !           666: }
        !           667: 
        !           668: void
        !           669: cadillac_pop_source ()
        !           670: {
        !           671:   cadillacObj.depth -= 1;
        !           672:   cadillac_switch_source (0);
        !           673: }
        !           674: 
        !           675: struct cadillac_mdep
        !           676: {
        !           677:   short object_type;
        !           678:   char linkage;
        !           679:   char access;
        !           680:   short length;
        !           681: };
        !           682: 
        !           683: static void
        !           684: CWriteLanguageElem (conn, p, name)
        !           685:      Connection *conn;
        !           686:      struct cadillac_mdep *p;
        !           687:      char *name;
        !           688: {
        !           689:   CWriteSomething (conn, &p->object_type, sizeof (BITS16));
        !           690:   CWriteSomething (conn, &p->linkage, sizeof (BITS8));
        !           691:   CWriteSomething (conn, &p->access, sizeof (BITS8));
        !           692:   CWriteSomething (conn, &p->length, sizeof (BITS16));
        !           693:   CWriteVstring0 (conn, name);
        !           694: 
        !           695: #if 0
        !           696:   /* Don't write date_type.  */
        !           697:   CWriteVstring0 (conn, "");
        !           698: #endif
        !           699:   CWriteLength (conn);
        !           700: }
        !           701: 
        !           702: static void
        !           703: CWriteLanguageDecl (conn, decl, object_type)
        !           704:      Connection *conn;
        !           705:      tree decl;
        !           706:      CObjectType object_type;
        !           707: {
        !           708:   struct cadillac_mdep foo;
        !           709:   tree name;
        !           710: 
        !           711:   CWriteHeader (conn, LanguageElementMType, StartDefineMType);
        !           712:   foo.object_type = object_type;
        !           713:   if (decl_type_context (decl))
        !           714:     {
        !           715:       foo.linkage = ParentLinkage;
        !           716:       if (TREE_PRIVATE (decl))
        !           717:        foo.access = PrivateAccess;
        !           718:       else if (TREE_PROTECTED (decl))
        !           719:        foo.access = ProtectedAccess;
        !           720:       else
        !           721:        foo.access = PublicAccess;
        !           722:     }
        !           723:   else
        !           724:     {
        !           725:       if (TREE_PUBLIC (decl))
        !           726:        foo.linkage = GlobalLinkage;
        !           727:       else
        !           728:        foo.linkage = FileLinkage;
        !           729:       foo.access = PublicAccess;
        !           730:     }
        !           731:   name = DECL_NAME (decl);
        !           732:   foo.length = IDENTIFIER_LENGTH (name);
        !           733: 
        !           734:   CWriteLanguageElem (conn, &foo, IDENTIFIER_POINTER (name));
        !           735:   CWriteRequestBuffer (conn);
        !           736:   cadillac_process_requests (conn);
        !           737: }
        !           738: 
        !           739: static void
        !           740: CWriteLanguageType (conn, type, object_type)
        !           741:      Connection *conn;
        !           742:      tree type;
        !           743:      CObjectType object_type;
        !           744: {
        !           745:   struct cadillac_mdep foo;
        !           746:   tree name = TYPE_NAME (type);
        !           747: 
        !           748:   CWriteHeader (conn, LanguageElementMType, StartDefineMType);
        !           749:   foo.object_type = object_type;
        !           750:   if (current_class_type)
        !           751:     {
        !           752:       foo.linkage = ParentLinkage;
        !           753:       if (TREE_PRIVATE (type))
        !           754:        foo.access = PrivateAccess;
        !           755:       else if (TREE_PROTECTED (type))
        !           756:        foo.access = ProtectedAccess;
        !           757:       else
        !           758:        foo.access = PublicAccess;
        !           759:     }
        !           760:   else
        !           761:     {
        !           762:       foo.linkage = NoLinkage;
        !           763:       foo.access = PublicAccess;
        !           764:     }
        !           765:   if (TREE_CODE (name) == TYPE_DECL)
        !           766:     name = DECL_NAME (name);
        !           767: 
        !           768:   foo.length = IDENTIFIER_LENGTH (name);
        !           769: 
        !           770:   CWriteLanguageElem (conn, &foo, IDENTIFIER_POINTER (name));
        !           771:   CWriteRequestBuffer (conn);
        !           772:   cadillac_process_requests (conn);
        !           773: }
        !           774: 
        !           775: static void
        !           776: CWriteUseObject (conn, type, object_type, use)
        !           777:      Connection *conn;
        !           778:      tree type;
        !           779:      CObjectType object_type;
        !           780:      CMessageSubType use;
        !           781: {
        !           782:   struct cadillac_mdep foo;
        !           783:   tree name = NULL_TREE;
        !           784: 
        !           785:   CWriteHeader (conn, LanguageElementMType, use);
        !           786:   foo.object_type = object_type;
        !           787:   if (current_class_type)
        !           788:     {
        !           789:       foo.linkage = ParentLinkage;
        !           790:       if (TREE_PRIVATE (type))
        !           791:        foo.access = PrivateAccess;
        !           792:       else if (TREE_PROTECTED (type))
        !           793:        foo.access = ProtectedAccess;
        !           794:       else
        !           795:        foo.access = PublicAccess;
        !           796:     }
        !           797:   else
        !           798:     {
        !           799:       foo.linkage = NoLinkage;
        !           800:       foo.access = PublicAccess;
        !           801:     }
        !           802:   switch (TREE_CODE (type))
        !           803:     {
        !           804:     case VAR_DECL:
        !           805:     case FIELD_DECL:
        !           806:     case TYPE_DECL:
        !           807:     case CONST_DECL:
        !           808:     case FUNCTION_DECL:
        !           809:       name = DECL_NAME (type);
        !           810:       break;
        !           811: 
        !           812:     default:
        !           813:       my_friendly_abort (33);
        !           814:   }
        !           815: 
        !           816:   foo.length = IDENTIFIER_LENGTH (name);
        !           817: 
        !           818:   CWriteLanguageElem (conn, &foo, IDENTIFIER_POINTER (name));
        !           819:   CWriteRequestBuffer (conn);
        !           820:   cadillac_process_requests (conn);
        !           821: }
        !           822: 
        !           823: /* Here's how we exit under cadillac.  */
        !           824: 
        !           825: static void
        !           826: exit_cadillac ()
        !           827: {
        !           828:   extern int errorcount;
        !           829: 
        !           830:   Connection *conn = cadillacObj.conn;
        !           831: 
        !           832:   if (flag_cadillac)
        !           833:     {
        !           834:       CCompilerMessage *req;
        !           835: 
        !           836:       CWriteHeader (conn, FinishedMType,
        !           837:                    errorcount ? 0 : CsObjectWritten | CsComplete);
        !           838:       /* Bye, bye!  */
        !           839:       CWriteRequestBuffer (conn);
        !           840: 
        !           841:       /* Block on read.  */
        !           842:       while (! readable_p (cadillacObj.fd_input))
        !           843:        {
        !           844:          if (exiting)
        !           845:            my_friendly_abort (34);
        !           846:          exiting = 1;
        !           847:        }
        !           848:       exiting = 1;
        !           849: 
        !           850:       req = CReadCompilerMessage (conn);
        !           851:       cadillac_process_request (&cadillacObj, req);
        !           852:     }
        !           853: }
        !           854: 
        !           855: #else
        !           856: /* Stubs.  */
        !           857: void init_cadillac () {}
        !           858: void cadillac_start () {}
        !           859: void cadillac_start_decl (decl)
        !           860:      tree decl;
        !           861: {}
        !           862: void
        !           863: cadillac_finish_decl (decl)
        !           864:      tree decl;
        !           865: {}
        !           866: void
        !           867: cadillac_start_function (fndecl)
        !           868:      tree fndecl;
        !           869: {}
        !           870: void
        !           871: cadillac_finish_function (fndecl)
        !           872:      tree fndecl;
        !           873: {}
        !           874: void
        !           875: cadillac_finish_anon_union (decl)
        !           876:      tree decl;
        !           877: {}
        !           878: void
        !           879: cadillac_start_enum (type)
        !           880:      tree type;
        !           881: {}
        !           882: void
        !           883: cadillac_finish_enum (type)
        !           884:      tree type;
        !           885: {}
        !           886: void
        !           887: cadillac_start_struct (type)
        !           888:      tree type;
        !           889: {}
        !           890: void
        !           891: cadillac_finish_struct (type)
        !           892:      tree type;
        !           893: {}
        !           894: void
        !           895: cadillac_finish_exception (type)
        !           896:      tree type;
        !           897: {}
        !           898: void
        !           899: cadillac_push_class (type)
        !           900:      tree type;
        !           901: {}
        !           902: void
        !           903: cadillac_pop_class ()
        !           904: {}
        !           905: void
        !           906: cadillac_push_lang (name)
        !           907:      tree name;
        !           908: {}
        !           909: void
        !           910: cadillac_pop_lang ()
        !           911: {}
        !           912: void
        !           913: cadillac_note_source ()
        !           914: {}
        !           915: void
        !           916: cadillac_finish_stmt ()
        !           917: {}
        !           918: void
        !           919: cadillac_switch_source ()
        !           920: {}
        !           921: void
        !           922: cadillac_push_source ()
        !           923: {}
        !           924: void
        !           925: cadillac_pop_source ()
        !           926: {}
        !           927: #endif

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